Nanoparticles in Equine Nutrition: Mechanism of Action and Application as Feed Additives.
Authors: Adegbeye Moyosore J, Elghandour Mona M M Y, Barbabosa-Pliego Alberto, Monroy José Cedillo, Mellado Miguel, Ravi Kanth Reddy Poonooru, Salem Abdelfattah Z M
Journal: Journal of equine veterinary science
Summary
# Editorial Summary Nanoparticles present a promising frontier for addressing multiple equine health and management challenges, from antimicrobial resistance and digestive efficiency to environmental impact, though their practical application remains largely experimental. Researchers conducted a comprehensive review of the mechanisms by which various nanoparticles—including gold, silver, zinc oxide, selenium, magnesium oxide, copper, and cerium oxide formulations—might function as feed additives, examining their effects on enzyme activity, microbial populations, mineral absorption, and gastrointestinal structure. Key findings suggest that zinc oxide nanoparticles enhance starch digestibility and increase villus height and crypt depth, whilst silver nanoparticles demonstrate antimicrobial activity against both gram-positive and gram-negative bacteria and may offer anthelmintic effects against parasites including fasciola; additionally, cerium oxide and cobalt nanoparticles show potential for reducing methane emissions. Despite these encouraging *in vitro* results, the authors emphasise that substantial rigorous *in vivo* research must precede any commercial recommendations to equine practitioners, meaning farriers, veterinarians, and nutritionists should view nanoparticle supplements with appropriate scepticism until robust field trials establish safety profiles and efficacy in working and competition horses. The regulatory pathway for novel feed additives in equine nutrition remains uncertain, making it essential that industry stakeholders await peer-reviewed evidence from controlled equine studies before integrating these technologies into feeding programmes.
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Practical Takeaways
- •Nanoparticles show promise as alternatives to antibiotics for managing equine digestive health and microbial control, but require extensive in vivo validation before commercial recommendation
- •Multiple nanoparticle types target different equine health issues (digestive efficiency, parasite control, environmental impact) and could potentially be combined in feed additive formulations
- •Current evidence is primarily theoretical and in vitro; equine practitioners should await peer-reviewed clinical trials before adopting nanoparticle-based feeds for their clients
Key Findings
- •Gold, silver, and zinc oxide nanoparticles enhance digestive enzyme activity and starch digestibility in equine stomachs
- •Magnesium oxide, silver, and copper nanoparticles demonstrate antimicrobial activity against gram-positive and gram-negative bacteria and reduce biofilm formation
- •Cerium oxide, silver, and cobalt nanoparticles reduce methane emissions while zinc oxide reduces fecal mineral output, addressing environmental concerns
- •Zinc oxide nanoparticles improve intestinal morphology by increasing villus height, crypt depth, and villous surface area for improved gut health